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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="setting-the-page-flow"></a>Setting the page flow</h2></div></div></div>
<p>
      Here is the area where <span class="structname">GtkAssistant</span> and <span class="structname">GnomeDruid</span>
	 differ the most. While <span class="structname">GnomeDruid</span> used the "next" and "back" signals from the 
	 <span class="structname">GnomeDruidPage</span>, <span class="structname">GtkAssistant</span> uses the following
	 techniques:
    </p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p><a class="link" href="GtkAssistant.html#gtk-assistant-set-forward-page-func" title="gtk_assistant_set_forward_page_func ()"><code class="function">gtk_assistant_set_forward_page_func()</code></a>: Allows to define a GtkAssistantPageFunc to let the
	   assistant know which will be the following page given the current page.</p></li>
<li class="listitem"><p><a class="link" href="GtkAssistant.html#gtk-assistant-set-page-complete" title="gtk_assistant_set_page_complete ()"><code class="function">gtk_assistant_set_page_complete()</code></a>: Lets the assistant know whether the specified page is complete
	   or not, updating buttons state accordingly.</p></li>
<li class="listitem">
<p><a class="link" href="GtkAssistant.html#gtk-assistant-set-page-type" title="gtk_assistant_set_page_type ()"><code class="function">gtk_assistant_set_page_type()</code></a>: Lets the assistant know the page role and update the buttons
	   state accordingly. Pages can have the following roles:</p>
<table border="0" summary="Simple list" class="simplelist">
<tr><td>Intro</td></tr>
<tr><td>Content</td></tr>
<tr><td>Progress</td></tr>
<tr><td>Confirmation</td></tr>
<tr><td>Summary</td></tr>
</table>
</li>
</ul></div>
<p>
      A sample GtkAssistantPageFunc could look like this:
    </p>
<pre class="programlisting">
static gint
forward_page_function (gint     current_page,
                       gpointer data)
{
  switch (current_page)
    {
    case 0:
      return 1;
    case 1:
      if (check_page1_data ())
	   return 2;
	 else
	   return 3;
    case 2:
      return 3;
    default:
      return -1;
    }
}
    </pre>
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